CIA Director (2013–2017); Assistant to President Barack Obama for Homeland Security and Counterterrorism and Deputy National Security Advisor (2009–2013); Interim Director of the National Counterterrorism Center and Founding Director of the Terrorist Threat Integration Center (2003–2005); Senior National Security and Intelligence Analyst for NBC News and MSNBC

Best-Selling Author, Leonardo da Vinci (2017), The Innovators: How a Group of Hackers, Geniuses and Geeks Created the Digital Revolution (2014) and Steve Jobs (2011); Acclaimed Historian and Journalist; President and CEO of The Aspen Institute